Detachable cover for centrifugal extractors.



R. M. SMITH.

DETACHABLE COVER FOR CENTRIFUGAL EXTRACTORS.

APPLICATION FILED OCT. 1a, 1915.

Patented Apia 8, 1919.

F 5 ATTORNEKS ROBERT M. SMITH, 015 SAN FRANCISCO, CALIFORNIA.

DETACHABLE COVER FOR CENTRIFUGAL EKTRAC'IORS.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed October 16, 1916. Serial No. 125,763.

To all whom it may concern Be it known that I, ROBERT M. SMITH, acitizen of the United States, residing at the city and county of SanFrancisco and State of California, have invented certain new and usefulImprovements in Detachable Covers for Centrifugal Extractors, of whichthe following is a specification.

The present inventionrelates to centrifugal extractors and moreparticularly to improvements in covers for the baskets of the same,particularly that .typeof centrifugals illustrated in my Patent Number1,275,486, dated August 13, 1918, and which is adapted for laundries,and by the use of which the operators are prevented from disturbing thecontents of the basket after the same is in operation; one wherein thecover is simple in construction, is capable of being detached from thebasket and is automatically locked when in position on the open top ofthe centrifugal basket.

The principal object of this invention is to provide an efficient coverwhich is capable of ready removal from and positioning over the open topof the centrifugal; one which is particularly adapted for use inconnection wit-h the extractors in laundries, one being capable ofdetachment from the basket, and one which, owing to its simplicity, maybe manufactured at little cost. My improved cover fully protects thecontents of the hasket while the same is rotating, both from beingthrown therefrom or from being disturbed by the operator while thecentrifugal is in motion.

With the above mentioned and other objects in view, the inventionconsists in the novel construction and combination of parts hereinafterdescribed and illustrated in the accompanying drawings and pointed outin the claims hereto appended, it being understood that various changesin the form, proportion, size and minor details of construction may beresorted to without departing from the spirit or sacrificing any of theadvantages of the invention.

To more fully comprehend the invention, reference is directed to theaccompanying drawings, wherein- Figure 1 is a view in elevation of anextractor with an embodiment of my invention applied to the coverthereof.

Fig. 2 is a detail sectional view of an extractor illustrating myimproved cover closing the opening in the top of the basket as at 2. Abasket 3 is rotatably mounted within the curb on a shaft 5 and the topthereof is open as at 6. The curb is rotated at high speed in anysuitable manner, as by the belt? passing around the pulleys 8 and drivenby power transmitted to one of the pulleys 9.

An imperforated cover 10, preferably formed of sheet metal, is adaptedfor closing the opening- 6 in the basket, and the same is of a diameteradapted toextend slightly beyond the peripheral edges of the basketopening 6 nd rests on the main body portion of the basket, and at thesame time of a size sufliciently small to pass within the opening 2 inthe curb.

The cover 10 carries on its under-face the fixed retaining arms 11 whichare down wardly bent within their length, as at 12, and projectoutwardly at their outer ends, as at 13 in Figs. 2 and 3, of thedrawings, to engage under the bead 14 surrounding the opening 6 in thebasket.

A manually releasable latch is carried on the underface of the oppositethe arms 11 and the same comprises a housing 15 open toward theperipheral edge of the cover. The housing is provided with a depression16 in which is adapted to slide the catch 17 on the underface of thefinger piece 18 which isslidably movable in the housing 15.

' A spring 19 is positioned in the depression 16 and engages the rearwall 20 of the catch 17,,forcing the catch outwardly to engage under thehead 14 of the basket at a point opposite the arms 11. Access may be hadto the finger-piece 18- through an opening 21 in the cover, said openingalso permitting the engagement of the underside of the cover to assistin raising the same for removal from the basket.

In positioning the cover in place, the edge thereof adjacent the arms11, is rested on the basket adjacent the opening 6 therein and theopposite side is then gradually cover 10 at a point lowered whichpermits the arms 11 to pass in an arcuate path beneath the bead 14, andwhen the peripheral edge of the cover is in proximity to the surface ofthe basket surrounding the opening 6, the catch 17 is forced inwardlyand on passing beneath the bead is forced outwardly again by the spring19 which maintains the catch in locked position and the cover detachablysecured over the openin in the basket.

Having thus descr bed my invention, what I claim as new and desire toprotect by Letters Patent is 1. In a machine of the character described,the combination with a stationary curb, of a rotatable basket thereinprovided with an opening, and having a flange extending around the Wallsof said opening, a detachable cover for the basket, a housing carried bythe under side of said cover, a latch within said housing, an actuatingspring for the latch bearing at one end against the same and at theopposite end against the wall of said housing and entirely protectedfrom the splashing contents of said basket during its rotation, saidlatch having a forwardly projecting part lying in a horizontal plane andengaging the under side of the flange of said basket and additionalretaining means carried by the cover for cooperating with the flange.

2. A machine of the character described, the combination with astationary curb, of a rotatable basket therein, a cover in said basket,a housing located on the under side of said housing and carried by alatching element within said housing, a spring located within thehousing having one end bearing against the latch and the opposite endagainst thewall of said housing to be protected from the splashingcontents of the basket, and an additional retaining means locatedremotely of said latch for engaging the basket to assist in retainingthe cover thereon.

3. In a machine of the character described, the combination with asuitable curb, of a rotatable basket therein provided with an openingfrom which the wall of the basket flares outwardly and downwardly, saidwall terminating marginally of said opening in an inwardly prO ectingflange, a detachable cover for the basket, and spaced means carried bysaid cover and adapted to engage under said flange, one of said meanscomprising a spring latch adapted to be urged outwardly in anapproximately horizontal direction to detachably secure the flanged openportion of the basket between the surrounding outer edge of the coverand said spaced means.

In testimony whereof I have signed my name to this specification in thepresence of a subscribing witness.

ROBERT M. SMITH.

Witness D. B. RICHARDS.

